Improvement in lubricating compounds



PATENT OFFICE.

ETHAN A. TONNER, OF sT. LOUIS, MISSOURI.

IMPROVEMENT IN LUBRICATING COMPOUNDS.

Specification forming part of Letters Patent No. 136,945, dated March18, 1873.

' To all whom it may concern:

Be it known that I, ETHAN A. TONNER, of

' St. Louis, in the county of St. Louis and State of Missouri, haveinvented a new and useful Improvement in Lubricating Compound, of whichthe following is a specification:

The object of this invention is to furnish a lubricant for car-axles andother purposes which shall be durable in its character and efficient inits action; and it consists in a comcompound composed of the ingredientsin about the proportions hereinafter named.

I11 forming my compound, I take of tallow and oil or similar olcaginoussubstances, three pounds; Tripoli, two pounds; lamp-black, on ounce.These ingredients are thoroughl mixed together after the tallow isreduced a liquid state by the application of heat.

The Tripoli and lampblack polish the jOl rnal, while the tallow and oillubricate it.

Tripoli is especially adapted to the purp so which I have in view, as itis a good non-c nductor of heat, and heat does not diminish ttspolishing qualities. It is also a most actiue absorbent,and will take upand hold about thirty-five per cent. of its own weight in oil, and willretain it under a red heat until it is thrown off in the form of gas.Tripoli adheres to a hot journal the same as to a cold one. This,together with its capacity as an absorbent, renders it peculiarlyadapted for the purposes to which I apply it.

I am aware that many mineral substances have been employed incombination with tallow and oil and other oleagiuousesubstances. Idistinctly disclaim all mineral substances except Tripoli, havingthoroughly tested it and become convinced of its great superiority forthe purpose named.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The above-described lubricating compound,substantially as specified;

' ETHAN A. TONN ER.

, Witnesses:

JAMES LITTLE, JOHN S. BREWER.

